FC 300 Operating Instructions
How to Install
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Electrical Installation
NB!:
Cables General
All cabling must comply with national and local regulations on cable cross-sections and
ambient temperature. Copper (60/75°C) conductors recommended.
Aluminium Conductors
Aluminium conductors are not recommended.
Terminals can accept aluminium conductors but the
conductor surface has to be clean and the oxidation
must be removed and sealed by neutal acid free
Vaseline grease before the conductor is connected.
Furthermore the terminal screw must be retightened
after two days due to softness of the aluminium. It
is crucial to keep the connection a gas tight joint,
otherwise the aluminium surface will oxidize again.
Tightening-up Torque
FC size
Cable for:
Tightening up torque
0.25-7.5 kW (A1, A2,
A3 and A5)
Line, Brake resistor, load sharing, Motor
cables
0.5-0.6 Nm
Line, Brake resistor, load sharing, Motor
cables
1.8 Nm
Relay
0.5-0.6 Nm
11-15 kW (B1)
Earth
2-3 Nm
Line, Brake resistor, load sharing cables
1.8 Nm
Motor cables
1.8 Nm
Relay
0.5-0.6 Nm
18.5-22 kW (B2)
Earth
2-3 Nm
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Removal of Knockouts for Extra Cables
1.
Remove cable entry from the frequency converter (Avoiding foreign parts falling into
the frequency converter when removing knockouts)
2.
Cable entry has to be supported around the knockout you intend to remove.
3.
The knockout can now be removed with a strong mandrel and a hammer.
4.
Remove burrs from the hole.
5.
Mount Cable entry on frequency converter.
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MG.33.A7.02 - VLT is a registered Danfoss trademark
